Currently, one of the most commonly accepted theories as to the origin of our solar system is this (chronologically ordered):

1. a "big bang" expansion of protoplasmic phenomena (primal energy, particles)

2. coalescence of this cosmic "soup" into stars  because of gravity during some thousands, millions, billions of years (approximately) 

3. remnant gas and dust of supernova star explosions reforming into planets and moons (purportedly caused by a rarer type of collapse after initial formations) 

4. abiogenesis, life beginning amidst, from inanimate matter upon Gaia and plausibly elsewhere (sometime, past \ future)


"Gaia is a beautiful name of Greek origin for these earths and waters. In Greek mythology, Gaia, known as the mother goddess, was the personification of the Earth. She is described as a caring and nurturing figure to all the children and plants of the world." (from a Google search for the word "Gaia")


evidence for all of the above, "The Big Bang Theory", includes:

  • the "red shift" of galaxies observed thanks to the Hubble space telescope

  • precisely same fossil remains on the east coast of South America and the west coast of Africa indicating "Pangea" existed, all continents together in ancient past

  • seeing such as below, seeming remnants of supernova explosions

Supernova remnant | Astronomy, Physics & Formation | Britannica

"WASP-39b's atmospheric transmission spectrum captured by Webb’s Near-Infrared Spectrograph (NIRSpec) reveals first clear evidence for carbon dioxide in a planet outside the Solar System."
(WASP-39b - Wikipedia)

According to a video lecture by a professor I saw upon the topic of abiogenesis, approximately 10^55 (a one with fifty-five zeros after it, plus or minus some orders of magnitude perhaps) combinations of chemicals, substances, existed on early Earth (~1B years old) which yielded the basics of life.

Eventually the thousands of types of species came to be upon Gaia, this planet, over eons.

Plausible-to-me dangers to the continued existence of life like we know it include:


We likely lack the ability to stop such things if very large and--or dangerous.

I hope these risks are negligible or not extant and we are robustly safe amidst known galaxies, this vast cosmos.